Wavefront Shaping with Coherent Optical Sensing

• Main Authors: Wathen, Jeremiah J, Hendrickson, Scott M, Lau, Clare W, Blodgett, David W
• Format: Patent
• Language: English
• Published: 06.06.2019
• Subjects: COLORIMETRY; DIAGNOSIS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; MEDICAL OR VETERINARY SCIENCE; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; RADIATION PYROMETRY; SURGERY; TESTING; TRANSMISSION

An example imaging system may include a spatial light modulator and a coherent optical receiver. The spatial light modulator may be configured to receive an optical input wave and perform wavefront shaping on the optical input wave to output a shaped wave. The coherent optical receiver may include an optical local oscillator, an optical beam splitter, an optical detector, and processing circuitry. The optical detector may be configured to receive a mixed wave from the optical beam splitter that is based on the mixing of a local oscillator wave with a scattering medium output wave that at least initially comprises a speckle pattern formed by the shaped wave interacting with a scattering medium. The processing circuitry may be configured to perform coherent detection on the mixed wave to extract optical amplitude and phase information, and provide an error signal as feedback to the spatial light modulator for performing iterative wavefront shaping.